The FAA this week granted a supplemental type certificate (STC) for installation of Garmin’s GTX 345 ADS-B In/Out and the GTX 335 ADS-B Out transponders on more than 60 models of helicopter. The approval is expected to provide a simplified path to ADS-B certification for aircraft on the Part 27 approved model list (AML).
Garmin’s All-in-One ADS-B Transponder Approved for Helicopters
Key Takeaways:
- The FAA granted a supplemental type certificate (STC) for Garmin's GTX 345 (ADS-B In/Out) and GTX 335 (ADS-B Out) transponders on over 60 helicopter models, simplifying ADS-B certification for Part 27 aircraft.
- The GTX 345 provides comprehensive ADS-B In features, including subscription-free weather and dual-link traffic with audible alerts, and can wirelessly stream data to cockpit displays, portables, and mobile apps.
- Both transponders feature Extended Squitter ADS-B Out with optional WAAS, are designed for straightforward installation often without panel modifications, and offer a specialized "on-scene" mode to minimize nuisance alerts for helicopter operations.
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